Device for removing insulation from electric wires



(No Model.)

A. E.-(). RIEUKEL. DEVICE FOR REMOVING INSULATION FROM ELEUTRIG WIRESLPatented June 16, 1896.

ANDREW E GRANMVLPHUID UTNQWASNINETOKDC.

UNITED STATES PATENT OFFICE.

ADOLPH E. O. RIEOKEL, OF BROOKLYN, NElV YORK.

DEVICE FOR REMOVING INSULATION FROM ELEC TRIC WIRES.

SPECIFICATION forming part of Letters Patent .No. 562,097, dated June16, 1896. Application filed December 13,1895. Serial'llo, 571,999. (Nomodel.)\

To all whom It may concern.-

Be it known that I, ADOLPH E. O. RIECKEL, a citizen of Germany, andaresident of Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Devices for RemovingInsulation from Electric Wires, of which the following is aspecification.

In electrical work it very frequently becomes necessary to bare the endsand other parts of insulated electric conductors for the purpose ofmaking connections and-the like.

The object of my invention is to provide a new and improved implement ordevice for readily cutting the insulation circumferentially throughoutits entire thickness down to the wire and also slitting it lengthwise,so that the out part of the insulation can readily be peeled off thewire.

In the accompanying drawings, forming a part of this specification, andin which like letters of reference indicate like parts, Figure 1 is aside view of my improved device for removing insulation from electricconductors. Fig. 2 is a vertical transverse sectional View of the sameon the line 2 2 of Fig. 1. Fig. 3 is a horizontal sectional view on theline 3 3 of Fig. 1. Fig. 4: is a vertical longitudinal sectional viewon'the line 4 4 of Fig. 3.

.other.

A cylindrical socket O is made integral with the lever A and is locatedon one side of the same, and from the lower open end of said socket theplugD projects, which is mounted to slide longitudinally in said socketand is prevented from turning axially by two pins E, which pass intolongitudinal grooves F of said plug.

A stem D projects upward from the top of the plug and through anaperture in the top of the socket, and above said socket retaining-nutsF are screwed on said stem. A helical spring G surrounds the stem-D andbears against the pins E and the upper end of the socket and the top ofthe plug.

The lower end of the plug D is beveled and sharpened to form a knifeedge or blade H.

The lever B is provided with a side wing J, having a longitudinalV-shaped groove K and a transverse V-shaped groove L, crossing thegroove K at right angles in its upper surface. The point of intersectionof said grooves is directly below the point of the blade H.

-Two rollers M, having V-shaped annular grooves in their rims, aremounted in longitudinal slots in the bottom of the groove K,

and a cylindrical roller M is pivoted in a pressed together and the wireis'below the blade H the levers cannot be brought together sufficientlyto cut the wire. The insulated wire is placed into the transverseV-shapech 7 groove L and the levers A and B pressed .together to forcethe blade H through the insulation b down to the wire, and then the wireis turned axially, so as to cause the blade H to make a circumferentialcut in the insulation. Then the lever A is raised and the wire shifted adistance equal to the length of insulation to be removed and anothercircumferential cut is made, as set forth above. Then the wire is placedlengthwise in the groove K and the lever A brought down, so that theblade H penetrates the insulation 1) at one of the circumferential cuts,and then the wire is pulled lengthwise on the rollers M and N until theblade H is at the other circumferential out, whereby that part of theinsulation 19 between the two circumferential cuts is slittedlongitudinally and can readily be peeled off the wire a. When the end ofthe wire is to be bared, only one circumferential cut is required, andthe insulation is then slitted only from the circumferential cut to theend of the wire. The spring G is so adjusted that when the screw 0 isnot correctly adjusted and the blade I-I would cut intothe wire the plugD will give to prevent cutting the wire in case it is slightly buckledor bent.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with two pivoted handle-levers, of which one isprovided with a lateral wing, having a longitudinal groove and atransverse groove in its upper surface, a socket extending upward fromthe other lever, a blade mounted to move lengthwise in said socket and aspring in said socket for pressing the blade downward with a yieldingpressure, substantially as herein shown and described.

2. The combination with two pivoted handle-levers, of a blade held inone and a wing ber, 1895.

ADOLPII E. O. RIECKEL.

I'Vitnesses:

WILLIAM FITZGERALD, HENRY HELD.

